Matsya Purana 180.57

180.57

prayāgādapi tīrthāgyrādidameva mahat smṛtam.
jaigīṣavyaḥ parāṃ siddhiṃ yogataḥ sa mahātapāḥ .. 180.57 ..

The people get Mokṣa (freedom) at Prayâg (Allahabad) If the people take My refuge, they get Mokṣa, yet in spite of Allahabad being the best of all places of pilgrimage, this Benares is the chief of all, and is reckoned to be superior to Prayâg—57.

There was a great ascetic Ṛiṣi named Jaigîṣavya He attained the highest siddhi in this Kāśi Kṣettra by his Bhakti and devotion towards Me—58